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Modelling of Impingement Phenomena for Molten Metallic Droplets with Low to High Velocities

Tabbara, H and Gu, S (2011) Modelling of Impingement Phenomena for Molten Metallic Droplets with Low to High Velocities International Journal of Heat and Mass Transfer, 55 (7-8 (M). pp. 2081-2086.

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Abstract

Thermal spray coatings are formed by accelerating a stream of powder particles towards a targeted substrate surface where they impact, deform, and adhere. A fundamental understanding of the splat formation can pave the way for future developments in thermal spray technology through better understanding. Numerical modelling is applied in this investigation which simulates the detailed transient flow of a molten metal droplet impacting, deforming, and solidifying on a flat, solid substrate. The computations are carried out on a fixed Eularian structured mesh using a volume of fluid method to simulate the boundary between the metallic and atmospheric-gas phases. The results shed light on the break-up phenomena on impact and describe in detail how the solidification process varies with an increasing impact velocity.

Item Type: Article
Authors :
NameEmailORCID
Tabbara, HUNSPECIFIEDUNSPECIFIED
Gu, Ssai.gu@surrey.ac.ukUNSPECIFIED
Date : 26 December 2011
Funders : EU FP7, UK Engineering and Physical Sciences Research Council (EPSRC), PowderMatrix
Identification Number : 10.1016/j.ijheatmasstransfer.2011.12.010
Uncontrolled Keywords : Droplet impact, Metal powder, Model, CFD, Thermal, Spray, VOF
Depositing User : Symplectic Elements
Date Deposited : 17 May 2017 13:51
Last Modified : 17 May 2017 15:13
URI: http://epubs.surrey.ac.uk/id/eprint/840575

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